How to Repair UEFI Boot in Windows 10 and 11?

Before repairing UEFI boot in Windows 10

An EFI file, or Extensible Firmware Interface file, is a Bootloader executable used in UEFI (Unified Extensible Firmware Interface) based computer systems, containing data that directs the boot process. If the UEFI Bootloader is damaged or missing, the computer will fail to boot, necessitating a repair. Before proceeding, it’s crucial to check if motherboard supports UEFI mode; you can do this by right-clicking on the computer, selecting Manage, and checking Disk Management for the "Convert to MBR" option when right-clicking the disk. 

If UEFI is supported and issues persist, the Bootloader can be repaired using various methods. Sometimes, boot failures in Windows 11/10 arise from problems with the master boot record, which also requires repair for the system to restart properly. The Windows 11/10 recovery environment offers an automatic startup repair option, and if that fails, manual repair can be performed using the Diskpart command prompt and other effective solutions. This article provides step-by-step methods to fix UEFI boot errors in Windows 11/10/8/7.

How to perform UEFI boot Windows 10 repair?

There are 3 ways to fix Windows 10 UEFI bootloader. You can choose the one that suits your situation most.

Method 1. Use AOMEI Partition Assistant

To effectively repair Windows 10 UEFI bootloader, it is recommended to use a professional disk manager tool as it can offer a safe and easy way for you. AOMEI Partition Assistant is an ideal choice. You can use this software to create a bootable USB drive and repair the Windows Bootloader without needing a CD. A simpleUSB drive lets you access Windows PE to check for disk issues and perform UEFI boot repair for Windows 10 and 11.

AOMEI Partition Assistant

The Best Windows Disk Partition Manager and PC Optimizer

Free Download
Windows 11/10/8.1/8/7

Case 1: Repair a running PC

Step 1. Install and launch AOMEI Partition Assistant. In the Main Tab, please click the "Recover" tab and select "Boot Repair".

Step 2. The Boot Repair tool will pop up. Please click "Next" to start the system’s boot entries scan process.

Step 3. After the process is completed, it will display the scan result: system paths, system versions, and boot status. And, all repairable boot entries will be available to select.

Advanced Settings: Select a location to store the repaired boot entry.

Repair to the current disk: The system will boot from the current disk and ensure the boot files are complete and functioning properly. (By default)

Repair to another disk: This operation will repair the boot entry or create a new system boot entry to ensure the system can boot from the disk you select.

Step 4. Select one/multiple repairable boot entries you want to repair and click the "Repair" button to start the boot repair.

Step 5. Wait for the repair process to finish. Once it is finished, you can check the repair result. If it succeeds, you will get a "Repair Successfully" result.

Case 2: Repair Boot for PC that is unable to Boot

Step 1. Install and launch AOMEI Partition Assistant on a working PC, click "Recovr"-"Boot Repair" and then click the "create a bootable disk" option to create a WinPE "Boot Repair" disk.

Step 2. Plug the bootable disk you created into the target computer you wish to repair the boot issue.

Step 3. Enter BIOS in your computer, choose the bootable disk as the boot drive to access AOMEI Partition Assistant.

Step 4. The PC that cannot boot into WinPE will automatically load the Boot Repair tool and start the boot entries scan process. All boot entries will be displayed. Then you can follow the same operations as the above shows.

Method 2. Fix corrupted MBR

AOMEI Partition Assistant also offers the option to fix corrupted MBR. If your Windows 10 cannot boot, please create a bootable USB first, and then follow the steps to fix Windows 10 UEFI bootloader.

Step 1. Connect a blank USB drive to another working Windows computer that can boot up normally. Download, install and launch the AOMEI Partition Assistant on that PC as well.

Step 2. Click "Tools" > "Make Bootable Media" on the upper interface, a window pops up, click "Next".

Step 3. In the next window, choose "USB boot device", then press "Proceed".

Step 4. Click "Finish" when the operation is done.

Step 5. Boot your Windows from the WinPE bootable USB you created. It contains the preinstalled AOMEI Partition Assistant software. Once log in, the software will run automatically.

Step 6. Right-click the system disk and choose “Rebuild MBR”.

Step 7. Choose the proper MBR type for your current OS.

Step 8. Click on “Apply” and “Proceed” to commit the pending operation.

After it is done, the damaged MBR will be rebuilt. Besides, you can also use this software to activate the Windows partition. Right-click the boot partition, and select "Advanced">" Set Active Partition".

Method 3. Enable Automatic Repair option

Windows includes built-in boot repair tools, such as Windows Automatic Repair, which can help fix common boot errors on Windows 11, 10, 8, or 7 by booting from installation media like a disk or USB. If you need to fix Windows 10 UEFI bootloader, you can try this method.

Step 1. Click "Repair your computer" on the "Install now" screen.

Step 2. Click "Troubleshoot" by choosing an option screen > click "Automatic repair".

Step 3. Choose an account from the list to continue at the Automatic Repair screen and wait for the process to finish.

You can restart your PC when the process is done, and then you should be able to use it normally again.

Conclusion

Repairing UEFI boot for Windows 10 is not an easy task. The steps above are only good for fixing common UEFI start problems. With the help of AOMEI Partition Assistant, you can easily deal with any boot issues. You can also use it to speed up Windows 10 to make it run faster, unpartition hard drive on Windows 10, or restore backup files from external hard drive, and so on. If you are a Windows Server user, you can choose the Server edition.